99871252 ÷ 312 
We're looking to find how many times 312 goes into 99871252.

Let's proceed to step 1:
When dividing 9 by 312, we get 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 312

On to step 2:
99 divided by 312 is 0 with a remainder of 99.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 99, we get 99.
Take the next digit (8) from the dividend and append it to 99, then repeat: 998 / 312

Let's proceed to step 3:
If we divide 998 by 312, we get 3 and a remainder of 62.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we take 936 away from 998, we end up with 62.
Bring next digit (7) of the dividend behind the 62 and repeat the process: 627 / 312

Step 4:
312 can be fit into 627 2 times, resulting in a remainder of 3.
Write down 2 as next digit of the result. 
Result so far: 32.0
Deduct 624 from 627 and we're left with 3.
Include the next digit (1) from the dividend after 3, then repeat: 31 / 312

Advancing to step 5:
When dividing 31 by 312, we get 0 with a remainder of 31.
Record the quotient 0 as the next digit in the result. 
Result so far: 320.0
If we subtract 0 from 31, we get 31.
Include the next digit (2) from the dividend after 31, then repeat: 312 / 312

On to step 6:
312 goes into 312 1 times with a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 3201.0
Subtract 312 from 312 to get 0.
Include the next digit (5) from the dividend after 0, then repeat: 5 / 312

Going ahead to step 7:
When dividing 5 by 312, we get 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 32010.0
Subtract 0 from 5 to get 5.
Include the next digit (2) from the dividend after 5, then repeat: 52 / 312

Going ahead to step 8:
52 divided by 312 is 0 with a remainder of 52.
Write down 0 as next digit of the result. 
Result so far: 320100.0
If we take 0 away from 52, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 9:
The number 312 fits into 520 1 times, leaving a remainder of 208.
Put 1 as the next digit of the answer. 
Result so far: 320100.1
Subtracting 312 from 520 leaves us with 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Going ahead to step 10:
312 can be fit into 2080 6 times, resulting in a remainder of 208.
Write down 6 as next digit of the result. 
Result so far: 320100.16
Subtracting 1872 from 2080 leaves us with 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Going ahead to step 11:
If we divide 2080 by 312, we get 6 and a remainder of 208.
Use 6 as the next digit of our solution. 
Result so far: 320100.166
Subtracting 1872 from 2080 leaves us with 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

In conclusion, the division gives 320100.166 with a balance of 0.0208.